Apparatus for the production of intermittent or continuous high-frequency oscillations



L GOLDEN. I APPARATUS FOR THE PRODUCTION OF INTERMITTENT 0R CONTINUOUS HIGH FREQUENCY OSCILLATIOM.

APPLICATION FILED AFR-1.11918.

Patent/ed Mar. 29 1921;

W! TNESS A TTGRNE YS oerrrosms, new, sou ucrsoo cezrrosum is coiesoesrrois or A uzou'u.

.TU$ EUR TEE PEQDUCTE'ON F IHTEEMEZTENT OR CONTINUOUS HIGH- FREQUEHUY QSCILLATZGHS.

Specification of Letters Eetcut.

Patented Mar, 29, 113x210 ippiicatiou filed April 1, 1918.- Serial No. 222G983.

is L .3 1 2, 1L.

./ is OOjdCl/S o 2,11 oscu (11 ion of e.

.L the producmagnetic Waves u 1 rec radio-isle one commu'oicw e relation is to is capable of uni-seen; or continuous iticns without breakcurrent now through oer objecs of the inveir .iis actuoied by $1 sole b or the electrodes in tlie oscilletor so make or creel: the spark oetweeii the electrodes when to provide a means "up between she is employed Further ohgore l is disgrerogusiic view s oyr ng reless system adapted be used either ielephone or telegraph station :1 wireless r eding.

2 is oscillator employed in the system.

Fig. 3 is a disgremmzfiic View showing the oscillator connected wiih source of alternating curreios supply r is empl Qyedwhcn the e oparsuus is used celegraphing. a q a Referring so the drawings in cereal and rmrticularlv "to ll'ifi" 1. I have shown i he c uileci'sion and a V 1e oscillator l a central, yeraical section of'the relation to the several other instruments required in a radio station adapted for sending either by telegraph or telephone in which Gr indicates a direct current generotor, which, in the present instance, is shown as connected in series Wlilh the electrodes 2 This part of the station completes the direct current supply circuit While the primary oscillating circuit passes irough ocondenscr C which is conncc in series with the primary coil D of a 11; i, frequency transformer connected across the terminals of the electrodes 2 and 3, between which is formed the spark gap of the oscillator. The primary oscillating circuit is here shown in heavy lines to distinguish it from the currenu supply circuit and she secondary oscillating circuit which consists of the secondary coil E of the transformer, an entenna F and the transmitter which is con- "nected as shown at K, with the ground.

The oscillator proper consists of a cylindrical conisiner 8 provided with a cover 9, preferably cons zructed of insuls sing material upon which is mounted on elec'cromagg net 1O of suitable consiruction. Slidahly mounted in the irou core ill-of said magnet is a, rod 12, consirucsed of suitable Dori;

trodes s1il'omergedv W I 1' E 'ihe eleccrodes employeecosy be con-- Qlout preferably sir steel of any suiislole' c eriencehosslccwu or tune-stem, as oructicsi that metal less dency to corrodeor burn away due to the heat created by the I spark gap than any other metal so far used. Mounted in the upper end of the core 11 is an adjusting screw 17, which is provided for the purpose of limiting the lift of the ,rod 12 carrying the electrode 2, and intenposed between thelower ends of the core at 5.; a telegraph. key 21 and a switch 22 being interposed in this circuit for purposes hereinafter to be described.

The amount of current re uired to energkilze the magnet 10 suilicient y to separate t e electrodes is comparatively small; hence the reason for connecting the magnet circuit.

as shown with the variable resistance. The transmitter H is, as previously described connected between the secondary coil E 0 ground connection It is also connected with a switch 23 which permits bridging of the transmitter when the telegraph is being employed.

With the switch 7 closed and the generator G operating, the operation will be as follows: If it is desired to send a message by telegraph it is only necessary to close the.

switch 23 and open the switch 22. The key 21 may then be depressed to send the dot and dash message'in the usual manner, closing of the terminals of the keys causing the magnet 10 to become energized and lift the upper electrode, while breaking of the con tacts of the key permits the upper electrode to contact with the lower electrode; high frequency oscillations or magnetic waves be ing transmitted when the electrodes are separated and the spark gap is formed while no oscillations are transinitted the moment the electrodes contact.

While the"'spring 18 is here shown for the purpose of rapidly cldsing the gap bef tween the electrddes, I wish it. understood that this is not essential as the wei ht of the rod supporting the upper electrode practi cally serves the same function.

In actual practice it has been found that vibrations, no matter how rapid,when transmitted to the key 21, cause the oscillator to respond that is, it has been found impossible to operate the key so fastthat the oscillater will not respond. An important feature which should be observed in connection with the present apparatus is the fact that the operation of the key 21 does not make et/acne or break the current flow through the oscillator but it merely makes or breaks the spark gap formed between the electrodes when these are separated. The current flow is thus continuous but the oscillations promay also listen in at the same time and can readily receive under such conditions as no oscillations are being transmitted from the sending station excepting when the electrodes are separated. He may, therefore, be in communication with any other station and can immediately receive any message therefrom by merely permittin the electrodes to contact to close the spar; gap,

r v preventing the production of the highfire the high frequency transformer and the quency magnetic waves which would interi'ere with the receiving end of the station.

The electrodes may be submerged in any suitable liquid, but preferably distilled water, and should under all conditions be.

't ith an alternating current generator, such ls shown at 30 and; that the iner electrode is raised when it is desired to secure a spark gap by means of a magnet si-inllarto that shown in Figs. 1 and 2. The magnet is,

however, in the presentinstance energized from a separate source of current so i as the magnet being broken by a telegraph key, as previously described.

The apparatus shown in Fig. 3 can-only be used for radio telegraphy, as the alterfor instance a battery 31, the circuit through nating'current employed renders it unsuit-- able for telephonic communication. it is,

however, ideal "for radio telegraphyand has advantagesnot secured when a direct cur-- rent is employed. Yror instance, by employ ing an oscillator constructed as here shown V in connection with an alternating current nevasoa circuit it becomes possible to use a low tension current, say five hundred volts. This is due to the fact that the electrodes of the coil of a high spark gap to produce and radiate oscillator are normall in contact with each other and are only slightly separated when oscillations are to be created. The electrodes of the oscillator being submerged are absolutely noiseless and they are under all conditions kept cool, as the liquid in which they are submerged conducts the heat away from the electrodes. Another advantage obtained by supplying the oscillator with alternating current is the production of a musical note, due to the cycle of alternations ofthe-current fiow, thus obviating the necessity of employing an interrupter for this purpose.

Having thus described my invention, what I claim and desire to secure by Letters Pat- .ent is- 1. In a high frequency oscillator, a pair of electrodes, means for maintaining the electrodes submerged in distilled water, means for maintaining a constant current flow through the electrodes, and means for maintaining the electrodes slightly separated 0r for intermittently separating the same to establish a continuous or intermittent spark gap between the electrodes to permit the production of continuous or intermittent high frequency oscillations of the circuit or current flow through the electrodes.

2. In a high frequency oscillator, a pair of metal electrodes, means for maintaining said electrodes submerged in distilled water, means for maintaining a constant current flow through the electrodes, and a solenoid circuit controlled by a telegraph key for in termittently separating the electrodes.

3. A system for the production of intermittent or continuous high frequency oscillations, comprising a source of supply and leads therefrom connected to the primary frequency transformer, a variable resistance and impedance'interposed in one of the leads and an impedance coil and condenser interposed in the other lead, a

' pair of electrodes between the leads forming 50.

a separate circuit for the condenser and primary coil, and a solenoid circuit in shunt with the leads from the source of supply for raising one of the said electrodes.

' 4. In an apparatus for theproduction of intermittent or continuous high frequency oscillations, an oscillator comprising a pair of submerged electrodes, means for maintaining a continuous current flow through said electrodes, said electrodes adapted to normally contact with each other, a magnet adapted to separate the electrodes to form a high frequency oscillations 'of the current flow through theelectrodes, means connecting the terminalsof the magnet with the source of current supply, a telegraph key interposed in said circuit to make and break the circuit through the magnet, and a switch in the circuit adapted to maintain a continuous current flow through the magnet to maintain a permanent spark gap between the'elec trodes.

5. In an apparatus for the production of intermittent or continuous high frequency oscillations, an oscillator comprising a pair of submerged electrodes, means for maintaining a continuous current flow through said electrodes, said electrodes adapted to normally contact with each other, a magnet adapted to separate the electrodes to form a spark gap to produce and radiate high frequency oscillations of the current flow through the electrodes, :1 separate shunt circuit connecting the terminals of the magnet with the source of current supply, a telegraph key interposed in said circuit to make and break the circuit through the magnet, a* switch in the circuit adapted to maintain a continuous current flow through the magnet to maintain a permanent spark gap between the electrodes, a high frequency transformer, a primary coil in said transformer connected in series with. the electrodes of the oscillator, a condenser interposed between one of the electrodes and the primary coil, a secondary coil in the transformer, an antenna connected with one terminal of said secondary coil, a-ground connection for the opposite terminal of the secondary coil, a transmitter interposed in said ground connection, and a bridgingqswitch on the transmitter.

6. In an apparatus for the production of intermittent or continuous high frequency oscillations, an oscil'latorcomprising a tank adapted to contain distilled water, a stationary electrode submerged in said Water, a vertically movable rod, a second electrode carried by said rod adapted to normally engage the first named electrode, means for maintaining a continuous circuit through the electrodes, a solenoid circuit connected in shunt therewith, said solenoid being adapted to raise the rod with attached electrode for separating said electrodes.

7. In an apparatus for the production of intermittent or continuous high frequency oscillations, an oscillator comprising a tank adapted to contain distilled water, a cover for said tank, a pair of rods'extending downwardly from the cover, a plate connecting the lower endsof the rods, an electrode supported by said plate and submerged by the distilled water, a solenoid magnet supported by the cover, a rod extending through the solenoid forming an armature therefor, an electrode on the lower end of said rod adapted to normally contact with the first named electrode, an adiusting screw carried by the magnet adapted to regulate the lift of the armature rod and the electrode carried thereby, 2L suce ofdirect current supply,

means for maintaining a continuous circuit through the electrodes, means connecting the magnet witli sztid source of current supply, and a telegraph key interposed in the circuit adapted. tomake andbreak the circuit through-the magnet.

In testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses.

ALPHONSUS L. GOLDEN.- Witnesses.

W. W. HEALEY, M. E. EWING. 

